Friction spring draft-rigging.



J. P. OGONNOR. Y

, FRIOTION SPRINGDRAI'T RIGGING. APPLICATION FILED oo'T. 1, 190e.

953,055, Pacentedmarfza, 1910.

a Sanne-sum 1.

WITNESSESt, IN VBN TOR Patented Mar. 29, 1910,'

3 SHEETS-SHEET 2.

J. P. 'OCONNORl wl R. Mw/Mm FRIGTION SPRING DRAFT RIGGING. APPLIoATIoN FILED 00T. 1, 1909.

New, R?

wnNEssEs. f JWM/wud J. P. OCONNOR. FRIOTION SPRING `DRAFT RIGGING. APPLIoATIoN :mm 00T. 1, 1909.

a SHEETS-SHEET 31 y :Nvszvmk y 7a/m 7' f/mar Patented Mar. 29, 1910.

WITNESSES ifo , a high spring cushioning capacity and a releasing.

` the claims.

' a detail vertical section on line 343 of Fig.

elevation, partly .in verticalv section., of a vthe draft rig in is applied. A1 the front 'shell or case havin U NiTni) sTaTns PATENT onirica.'

JOHN F. OCONNOR, 0F CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

' WILLIAM H. MINER, OF CHICAGO, ILLINOIS.

FRICTION SPRING DRAFT-RIGGING.

i Specification of Letters Patent. Patented D131'. 29, 1910.

-pplication led October 1, 1909. Serial No. 520,553.

To all whom it may concer/n: y l at its rear end to receive a series of fiat rec- Be it known that I, JOHN F. OCoNNon, a i tangular plate springs E2, the chamber d2 citizen of the United States, residing in Chicago, in the county of Cook andy State of Illinois, have invented a new and useful Improvement in Friction Spring Draft-Rio'- ging, of which the following is a speci cation. l l

My invention relates to improvements in friction draft rigging.

The object of my invention is to provide a friction draft riggin which will be compact in form, compose of few parts, have or wings D1 on the friction shell Dy F F are longitudinally movable segmental friction shoes, preferably three 4in number,

` sliding` frictioiial engagement with the `in- Tlie friction shoes F preferably have oblique meeting edges f1 to insure evenness of wear. F1 is a wedge actingl against the friction shoes, the same being preferably three faced or pyramidal in shape, its faces corresponding to the number of the friction shoes.

The friction shoes F each have an inner wedging face f2 coactin with a correspond# ing wedging face f1 oft e wedge F1 through the anti-friction rollers which are interposed between tlie wedgdand friction shoes.

high friction cushioning capacity, and which wi l be strong and durable and efficient and reliable in operation in cushioning and in My invention consists in the means I employ to practically accomplish `'this object or result, the same being herein shown and described and more particularly specified in to keep the rollers in `osition, and also end ping lengthwise, and the wedge F1 also has In the accompanying drawing forminga stop shoulders f to aid in keeping the part of this specification, Figure 1 is a side is interposed between the wedge F and the friction sp1-inv draft rigging embodying m g b y draw-bar. A rear follower G1 is interposed invention.v Fig. 2 is a plan view. Fig. 3 is E2 and the draft yoke B1, the rear fo lower G1 preferably having hardened steel wearing blocks g for the ends of the adjacent one of the curved plate springs E2 to bear against and rub. The rear. follower G1 is also furnished at itsv ends with flanges g1 inclosii'ig-the ends of the' curved plate or leaf springs E2, `and with upper and lower flanges g2 inclosing or housing the upper and lower edges of the curved plate springs E2, the folloWerG1 being thus box shaped to partially inclose the plate springs E2.' The rear follower G1 fits or telescopes within the rear rectan ular end ofthe friction case or shell D, an it is provided with lug's g3 which fit within and eno'age coperating flanges (Z3 at the rear enda of the friction 2. Fig. 4 is a detail horizontal section on line 4 4 rof Fig.` l showing the friction mechanism in elevation. Fig. 5 is a rear end viewofthe friction case or cylinder and contained parts, as shown in Fig. Fig. 6 is a front end view of the friction case and contained parts. Fig. 7 is a vertical cross section -on line 7-7 of Fig. 1. Fig. 8 is a detail perspective vview of the wedge and Fig. 9 is a detail perspective view of one of the friction shoes.

In the drawing, A represents the center sills or frame members of the car to which or end sill, t e draw-bar, B1 the draft yoke secured thereto and C the draft lugs or stops against which the followers abut, and C1 intermediate stops to limit the movement of the followers and cushioning devices. v

D is a longitudinally movable friction an internal friction face d, preferabl cy indrie in cross section, and having a cy indrical chamber d1 at the rear of its friction face d to receive coil springs E E1, and a rectangular chamber d1 other parts.` A supplemental follower G2 isinterposed between the curved plate springs E2 and the rear ends of tliecoiled springs E Eb. This supplemental follower is con- F1, the connecting rod having a head It at one end and a threaded nut h1 at its ternal friction face d of the friction shell D.

being formed by integral lateral yextensions each having an external friction face f in The friction shoes F avestop shoulders ff' shoulders f5 to keep the rollers from slipf i rollers in position. The front follower G.

between the series of curved plate s rings 'n shell I) to retain the follower G1 in asseml bled position with the friction shell and nected by a connecting rod Hwith the wedge 2Q mental follower v tween stheilafte l'iilV Junction in starting a by when b '30 d* to-rece'ive'fthe supplemental follower G2,

' cushioning action 40 s rings -Ef on thefriction p other end, fitting in their rear plate which4 .supports the .draft rig position "Ibtweentlie draft sills A A,

a recess g* in the supplei men-a1 fonowerea 'Thesuppiemeniai foi: lower G2 is also furnished with a project I ing boss g5 for the small coiled spring E1 to beara ainst, and-toserve'as a guide to t -hold* the arge coiled spring E in position. The friction shoes F- hanefniprecess f7. atend to receiv't'he4 front end of the small coiled spring E1, and a shoulder f8 for-the-front fend' 'of the small Acoiled i spring to bear against. f

`represents a removable tie or guide ging in the tie, platebeing' 'secured to the sills by bolts K1;

'The plate'. springs- E? are made of com- I I paatively thickjs ringplatesteel and are preferabl-ytof'abttwice the capacity of the two-coiledspriiiy Ial As the supplef ?"isinterEposed directly bes lrings v2fand vthe coiled I' t esprin s operate in `conl the reA ease action after devices havegbeen rompressed l ow'of'the draw-bar, tous inf surln'g-a positive and certain releasy action, however'igre'a't may be the total cushioning g capacity ofthe draft rigging. The friction shell Vli'fis" provided with,V a l:shouldered recess l springs the cnshionin the vsame'fjliinitingf the motion of said fol@ lower-'inthe'foiward direction only or toward -ftheff'frictio'n';shoes-jl As the weaker s rings E Elfnly 1acftfagainst the'friction s oesybeingintrposedfbetween the friction I shoes and' the hj-i 'hhapacfity springs E2, the ,l

'of the" friction n shoes is normali-'y restricted'"or, limited to that pro f duced *byftiie' resisting'faction of the lweaker s' shoes.. lThis reners the; 'rigging asfa'wholecomparatively ;:sensitiYe-'and wery, Aenicient in cush- ,i ioningffaction; under "extremely heavy lblows after ther'fcoiled'sprin'sE Ell are compressed i substantiallysolidi' ghe heavy plate sprin s fnrtlier'actto' further increase t e rictional'cnshioning action n friction l bens producdbyfreaso of' thefact thatthe total f compressivemoyeme'itiof the' plate springs I Ea is greater thahttlie'nrmal,projection of f tlie main-"followerGwfbeyndf the rear end g of the friction jsh'ellB', as will understood'from igffof'the drawing. i

1. in annee' l tangular extension shell, EL G01' I plate s rings-Within said rectangular exten- `coinbination with friction shoes, of a fric tion' shell having a rectangular'extension at one end to receive plate springs, a coiled spring bearing against the friction shoes, plate springs in said rectangular extension of the friction shell, and' a follower interposed between spring andthe plate springs, as specified. i

2. In a friction spring draft rigging, thel combination with a friction shell, o 'friction shoes within the shell, a wedge, a coiled spring' acting against the friction shoes, a series of plate springs at the opposite lend of' the coiled spring, a supplemental follower `interposed between the plate springs and the a connection. between the wedge and said supplemental follower, substantially as s eciiede 1 1 3. In a friction spring draft rigging, the. combination with a friction shell, oA friction .shoes within the shell, a wedge, a coiled spring acting against the friction shoes, a series of late springs at the opposite end. of the coile spring,

supplemental the coiled substantially linterposed between the plate springs and the coile spring, a connection between the wedge and said supplemental follower, a rnain `fol-lower bearing against the plate .sprin s, said main follower and said friction s ell aving interenga in the main follower anl p ate springs in assembled position within the friction shell,- ,'ibstantiall as speci-ed.

riction draft v with .a friction stiel havinga reclat one end tdrec'eive plate sprinlgs, yof friction sl 1.oes"withinr the ed spring within the shell, the friction shell, substantial-ly as ,Y specied.

, 5. In a friction draft ri bination with a friction she tangular extension at giving, the comha'ving a recshell, a coiled spring within the shell, plate s rings within saidgrectangnlarextension ofl tiie-friction shell, amain follower bearing against vsaid plate springs, and a supple mental 'follower between the p l and plate springs, substantially as e eciied.

. 1 JOHN'F. @CONv 0R;

Witnesses:

'. i EDMUND Ancona,

PnAnn Anmarsshoulders to hold riggingt the I coin 10o l oneend to receive v plate springs,L of frictionk shoes within the coiledv spring 

